It was not Captain Nemo's submarine, but the spiral-shaped snail-shell of nautilus pompilius, a cephalopod, similar to an ammonite, which inspired the designer to this special way of conveying water. When the big disc is turned, the conveyor snail starts taking in water and let it run off through the central hub. The maximum conveying height corresponds to the radius of the wheel. The Nautilus Snail is a very attractive water supply for water play systems and demands physical effort.